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Home >> Lincoln >> 2006 >> Navigator 2WD V8-5.4L VIN 5 >> Repair and Diagnosis >> Heating and Air Conditioning >> Testing and Inspection >> Pinpoint Tests >> Test N: The Temperature Control Is Inoperative/Does Not Operate Correctly - Manual Climate Control
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Test N: The Temperature Control Is Inoperative/Does Not Operate Correctly - Manual Climate Control

PINPOINT TEST N: THE TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY - MANUAL CLIMATE CONTROL


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N7-N8:






Normal Operation
Under normal operation, the temperature blend door actuator is supplied voltage on circuit 295 (LB/PK) and ground on circuit 57 (BK). As the temperature selection changes it varies the voltage on circuit 437 (YE/LG) to the temperature blend door actuator. The temperature control potentiometer receives voltage through circuit 296 (WH/VT).

Possible Causes
- Fuse
- An open, short to voltage, ground or together in circuits 57 (BK), 295 (LB/PK), 296 (WH/VT) or 437 (YE/LG)
- Temperature blend door actuator
- Climate control switch
- Stuck or bound linkage or door
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